EP 1628122 A1 20060222 - Focus processing with the distance of different target wheels
Title (en)
Focus processing with the distance of different target wheels
Title (de)
Scharfstellverfahren mit verschiedenen Zielradvorrichtungsdistanzen
Title (fr)
Procédé de mise au point avec les distances de différent dispositifs de roue-cible
Publication
Application
Priority
EP 04368058 A 20040817
Abstract (en)
An apparatus and method for automatically focusing a miniature digital camera module (MUT) is described. A MUT is loaded onto a test fixture and aligned with an optics system of a test handler. Focus targets contained within two target wheels are positioned over an optical centerline above the digital camera module using stepper motors. A field lens is positioned to focus an image of the targets onto the lens opening of the MUT. The image can be of a single target or a combination of targets contained on the target wheels at various optical distances from the MUT. A focusing unit adjusts the lens cap of the MUT for a best focus setting and after the MUT has been tested the best focus setting if physically fixed by permanently connecting the lens cap to the body of the MUT.
IPC 8 full level
G01M 11/02 (2006.01); H04N 17/00 (2006.01)
CPC (source: EP US)
H04N 17/002 (2013.01 - EP US); H04N 23/57 (2023.01 - EP US)
Citation (search report)
- [Y] EP 1348996 A1 20031001 - EASTMAN KODAK CO [US]
- [YA] US 6512587 B1 20030128 - MARCUS MICHAEL A [US], et al
- [YA] EP 0819927 A2 19980121 - DSAM LTD [GB]
- [Y] US 6195159 B1 20010227 - MACDONALD ROBERT E [US], et al
- [A] US 2003112360 A1 20030619 - LIAO FANG-YU [TW], et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 03 5 May 2003 (2003-05-05)
- [A] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1628122 A1 20060222; US 2006038976 A1 20060223; US 7248347 B2 20070724
DOCDB simple family (application)
EP 04368058 A 20040817; US 92930004 A 20040830